This is the commutative property (of addition, but this applies to multiplication as well)It doesn't matter which order the numbers are added in, the same result will be achieved.1+2 = 2+12*4 = 4*2
CD, CE, HG, GF, AL, LB, AB, HF, DE. A line segment is comprised of any two points. The ones I listed are the ones specifically named in the picture.
I'm pretty sure it would just be 87+x degrees right?
Let x be total amount of money
dress: 40% of x = 0.4x
left: x - 0.4x = 0.6x
shoes: 1/5x 0.6x = 0.12x
left: 0.6x - 0.12x = 0.48x
donate: $60
$132 left over
0.48x - 60 = 132
solve for x:
0.48 - 60 = 132
0.48x = 192
x = $400
